Title:
CONTROL METHOD FOR INJECTION MOLDING MACHINE AND INJECTION MOLDING MACHINE
Document Type and Number:
WIPO Patent Application WO/2022/196280
Kind Code:
A1
Abstract:
To more reliably improve the quality of a molded article, in a control method for an injection molding machine 1 including a measurement step for measuring a molten resin by retracting a screw 60 while rotating the screw 60 within a heating barrel 50 that melts the resin, the rotational speed of the screw 60 is decelerated in the measurement step from the timing that decelerates the retraction speed of the screw 60 before completion of the measurement step to stop retraction of the screw 60 upon completion of the measurement step, and the rotational speed and rotational direction of the screw 60 are controlled so that the back pressure, which is the pressure of the molten resin measured in the measurement step, becomes a target pressure lower than the back pressure upon completion of the measurement step when a target time is reached.
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Inventors:
ASANUMA NOBUYUKI (JP)
Application Number:
PCT/JP2022/007609
Publication Date:
September 22, 2022
Filing Date:
February 24, 2022
Export Citation:
Assignee:
SHIBAURA MACHINE CO LTD (JP)
International Classes:
B29C45/76
Foreign References:
| JP2007015349A | 2007-01-25 | |||
| JP2006168325A | 2006-06-29 | |||
| JP2008302649A | 2008-12-18 | |||
| JPH0623813A | 1994-02-01 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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